ESAW Gouy’s Method of Susceptibility Measurement of solids (EEC-10565)
In the Gouy’s method of susceptibility measurement, the solid sample in the form of a long cylinder (area of cross section A) is hung from the pan of a balance and is placed such that one end of the sample is between the pole-pieces of the magnet (field H) and the other one is outside the field. The force exerted on the sample by the in homogeneous magnetic field is obtained by measuring the apparent change (am)in the mass of the sample. The susceptibility x is given by x= 2amg/AH2. If the sample is in the form of powder, it is filled in a long non magnetic tube which is then suspended from the pan of the balance. Appt.
Consist of following:
(I) Scientific Balance, KSB-07
Capacity : 200 gms
Sensitivity: 1/10mg. by vernier
Beam: Hard Bronze/Brass
Arrestment: Circular, failling away type
Air Damping: Very quick and positive, beam coming to rest in 2-3 sec
Chainomatic: A gold plated chain is suspended from the beam with its other and screwed on the rotating drum
on which a scale graduated from 0 to 10 div each division representing 1 mg is installed. By the movement of this
scalebefore a vernier, reading upto 1/10th mg is taken.
(ii) Sample in the form of a long rod: Set of 4 samples, 2 each of Ebonite and Wood
(iii) Constant Current Power Supply
(iv) Electromagnet Pieces : 7 mtappered to25mm Mag. Field : 2 KG at mm air gap
Energising Coils: Two of approx. 13 ohm each
Power : 0-90VDC, 3A,for coilsin series
Schematic Diagram = 0-45VDC, 6A,for coilsin parallel Gouy’s Balance Experiment
